This document provides an overview of key concepts for mobile application development in Android, including necessary skills, app components, UI components, and layouts. It discusses activities, services, broadcast receivers, content providers, and common UI elements. It also covers the development workflow and how to configure, build, run and debug an app in Android Studio. Layout attributes for common layouts like linear and relative are defined.

1. Mobile
Application
development
Unit 3

2. 5 Skills
1. Problem Solving
2. Sharp Memory
3. Efficient Lazyness
4. Self Motivation and
Independence
5. Perseverance
2

3. 3
1. Activity
2. Services
3. Broadcast Receivers
4. Content Provider
Components of Android Application

4. 4
1. Entry point for interaction with the user.
2. Allows to load user interface for your application and visualize the layouts
3. App may have multiple screens meaning multiple activities
4. Starting activity is main activity
5.
Activity

5. 5
1. Used for performing background and long running operations for application
2. It does not have any user interface
3. Example
1. Location Sharing
2. Backup
Services

6. 6
1. Used to broadcast events of an application to another application
2. Apps can listen to system wide announcements
3. Broadcast can be delivered to app even when they are not running
4. Like Battery Low, Time, Screen has turned off etc.
5. Does not have user interface
Broadcast Reciever

7. 7
Means of accessing the data
It manages shared set of app data at a storage location where others app can access it.
It allows to access and modify other app data
Content Provider

8. 8
• Setup your workspace – Includes installation of Android Studio and creation of new project
• Write Your APP – Write your code, design UI and create resource for different devices
• Build and Run – Build your app and run it on Emulator or phone
• Debug, profile and test – Focus on eliminating bugs and optimizing app performance
• Publish – Release your signed app with proper versioning
Control Flow

9. 9
• Open Android Studio
• Configure SDK
• Click on Start a New Android Studio Project
• Select Empty Activity
• Click Next
Developing your app

10. 10
• Enter your project name in the Name Field
• Select location to save your project
• Select Java from Language Drop Down Menu
• Select minimum SDK to run your project
• Click Finish
Configuration for app

11. 11
• Connect your device to the development machine via USB or WIFI
• Before connecting make sure that you have made proper setting to install app via USB
• Like enabling developer mode and enable USB Debugging
• Then you can run your app on your connected phone by selecting it from configuration
drop down menu
Run your app

12. 12
• Layout/ View Group
• View
• Activities
• Fragments
• Notifications
UI Components

13. 13
• Action Bar
• View Pager
• Swipe to Refresh
• Toast Messages
• Dialog Boxes
UI Components

14. 14
• Menu
• Search
• Controlling System UI Visibility
UI Components

15. 15
• Containers which are used for laying all other elements within them
• It contains set of rules to place the UI Elements
• These are used to define the visual structure of the UI
Layouts

16. 16
Layout Attributes
id Layout_weight
Layout_width Layout_paddingLeft
Layout_height Layout_paddingTop
Layout_marginTop Layout_paddingBottom
Layout_marginBottom Layout_paddingRight
Layout_marginLeft Layout_gravity
Layout_marginRight orientation

17. 17
• Linear Layout aligns all children in single direction i.e., horizontal or vertical
• Direction can be specified through orientation attribute
• It arranges all layout elements next to each other – element by element
Linear Layout

18. 18
Linear Layout

19. 19
• It aligns all children in relative position
• The position of each children can be specified relative to siblings or parent
Relative Layout

20. 20
Layout Attributes
Layout_alignTop
Layout_toRightOf
Layout_centerHorizontal
Layout_centerInParent
Layout_centerVertical

21. 21
Layout Attributes